dataContext - The data object where changes made in the UI should be copied so that the changes can be accessed by other Traversables.

Throws:

TraversalException - if the user has entered either incomplete, invalid, or inconsistent data. This exception prevents the property dialog or wizard from continuing and forces the user to stay on the current Traversable until the data entered is valid or the user cancels. The exception class itself is capable of carrying an error message that will be shown to the user. Refer to its javadoc for details.